5 ms·
That's pretty cool. A number of comments on Youtube are saying "walkie-talkie", probably thinking of a 1960's/1970's form factor using transistors. Any voice tr
by hn8305823 3y ago
That's pretty cool. A number of comments on Youtube are saying "walkie-talkie", probably thinking of a 1960's/1970's form factor using transistors. Any voice transmitter in the 1920's would have used vacuum tubes.
But even then - the first "walkie-talkie" didn't exist for another 20 years, and was huge:
https://en.wikipedia.org/wiki/SCR-536 https://en.wikipedia.org/wiki/SCR-536
> The SCR-536 is often considered the first of modern hand-held, self-contained, "handie talkie" transceivers (two-way radios). It was developed in 1940 by a team
> The SCR-536 incorporated five vacuum tubes in a waterproof case.